Yarn-package.



Patented Nov. 10,1908.

INVENTOR $1M... MM

ATTORNEYS m: NORRIS rsrsn: ca., wAsr/msmu, n. c

S. W. WARDWELL.

YARN PACKAGE.

APPLICATION FILED OGT. 27, 1905.

WITNESSES SIMON W. WARDWELL, OF PROVIDENCE, RHODE ISLAND.

YARN-PACKAGE Specification of Letters Patent.

Patented Nov. 1o, 1908.

Application filed October 27, 1905. Serial No. 284,752.

To all whom it may concern:

Be it known that I, SIMON WV. WARDWELL, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Yarn-Packages, of which the following is a specification.

My invention is an improvement in yarn supply packages for shuttles,particularly for cloth loom shuttles. Its purpose is to make moreavailable for weaving operations the advantage already imparted by theUniversal system, of winding to other textile and analogous operations;viz., increased yarn capacity for the package, and uniform yarn deliveryfrom the package.

The accompanying drawing, forming a part of this specification, clearlyshows the embodiment of my improvement, in which:

Figure l is a view of the completed bobbin; Fig. 2 is a view of themethod of winding, showing how the coils are laid in the first layer;Fig. 3 is a diagrammatic view showing how succeeding layers aredeposited.

This improvement is a yarn package or filling cop consisting of anadvancing, conically wrapped layer of Universal winding, which speciesof winding is well understood by those versed in the art, but will bedescribed. Universal winding consists in laying the yarn in openlycoiled crossed helices, each helix having a nominal number of turns permovement of the yarn depositing guide in one direction of itsreciprocation. Thus, in the drawing, the yarn is shown as laid in fiveturns, or winds, as they are technically known, a package beingdesignated a two-windfive-wind etc., package according as the yarn makestwo or five, etc, turns per traverse of the yarn depositing guide andall the coils or winds turning in one direction are parallel to eachother lying side by side.

The term nominal turns is employed because the yarn actually makes asmall fraction of a turn more or less than the nominal number, to securethe gain that is, the peripheral change of turning point of the yarn atthe end of each traverse, which causes each helix to be laidperipherally ahead of or behind the next preceding helix, to produce theclose V-wind that characterizes the Universal system.

The method of winding will here be described as in a conical layer, thatbeing the predominent wind throughout the cop shown.

In detail, the yarn depositing guide commences a traverse on a coneelement indicated by (zb, see Fig. 3. The yarn is deposited in onedirection by the guide in five turns (which return it peripherally tothe element aZ)), plus the small fraction of a turn c-cZ which carriesit beyond the said cone element, to the turning point 0. The reversemovement of the guide (which is indicated diagrammatically by the arrow7") turns the yarn at c and deposits it in a reverse helix, which in tenturns from the point of starting (4 again crosses the cone element a-Z),and at the end of a full reciprocation of the guide, reaches its newstarting point 9 which is peripherally away from the original startingpoint a, to lay the next helix beside the first. hen the yarn hasturned. at e, and is guided back toward a in its return helix, itcrosses over and binds down the first helix at each point of crossing,It 2' etc. This, then, is a dominant charac teristic of the Universalsystem, that each helix extends a sufficient distance in one directionso that it binds and holds the next preceding reverse helix, and isbound and held by the reverse helix next succeeding. This isparticularized because the extreme taper of the filling bobbinsincreases the ten l ency of each helix to slip, and renders a means forbinding it especially necdful.

The winding is started on a spindle or core m, having preferably aslight taper to correspond with the usual taper of shuttle spindles. Asthe yarn is deposited, the longitudinal relation of the extremes oftravel of the guide and spindle changes, so that the yarn is not laid insuperimposed layers, as in a cylindrical cop, but in advancing, helicallayers. Each layer has two edges 11. and 0. As the winding progresses,the edge 0 is always on the spindle m, but the edge it lies, after thefirst covering of the spindle, upon yarn previously wound. Therefore,the edge a consisting of a succession of bends follows a conical formbeginning with the apex and ending with the base, which constitutes partof the cylindrical portion of the cop body. The edge 0 follows thesubstantially cylindrical surface of the spindle m, which, althoughpossessing a slight taper, is so nearly cylindrical that it will beconsidered so. U ntil the edge it reaches a point '1" directly over thestarting point of the edge 0, it is, with the exception of the firstcovering of the spindle, partly Wound of cylindrical form and partly ofconical form. After the edge 4?. has reached the point 1" directly overthe starting point 0 of the edge, it is wound of conical form, thedirection of reciprocation or path of the guide thereafter being ofconstant inclination to the spindle m.

The distinguishing features of the improved cop is the fact that theyarn in each of the so-called conical layers (a succession of whichconstitutes the cylindrical body portion of the cop) is forward of everyportion of the yarn in the preceding layer; that is, no part of onelayer is back of any part of the yarn in the preceding layer, so as, indelivering the yarn, to catch on or retain the latter, as occurs in allcops of ordinary winding either when exposed or compressed in theshuttle. Where the base is built up as described, the ultimate result isa cop having the base portion composed of a mass of yarn built up ofreversed helical coils, successively and progressively laid until themass is of the desired diameter of the cop, with opposed tapering ends,and the cylindrical body portion built up by continuing the laying ofthe reverse coils progressively in successive layers, every portion ofthe yarn in each layer in advance of that in the preceding layer towardthe nose of the cop. Obviously, such a cop, by virtue of its systematicwindingeach helix being closely beside adjacent helices throughout thecop and the delivery of such systematic winding from its conical nose,delivers its substance with exceptional freedom and uniformity.

As in the bobbin of my pending application, Serial No. 277045, filedSept. 5, 1905, the succeeding turning points vary both peripherally andlongitudinally, so do they in my present improved cop, but whereas thewinding of the improved bobbin aforesaid was started on a formed core ofthe desired taper, in my present improved cop the formed core isdispensed With, and the winding is started on the spindle or on aninexpensive paper tubewhich may or may not extend through the length ofthe copand the yarn is so wound as to form its mass to the desiredtaper.

I therefore claim as my invention:

1. A cop having a cylindrical body and tapering nose, said bodyconsisting of successive layers of substantially conical form, allportions of the yarn in each layer being forward of every correspondingportion of the yarn in the preceding layer.

2. A cop having a cylindrical body and tapering nose, said bodyconsisting of successive layers'of substantially conical form, the yarnin each layer in open crossed helices, and all the yarn in each layerforward of every corresponding portion of the yarn in the precedinglayer.

3. A cop having a base composed of a mass of yarn built up of reversedhelical coils successively and progressively laid to form opposingtapering ends and with a cylindrical body, said body consisting ofsuccessive layers of substantially conical form, all portions of theyarn in each layer forward of every corresponding portion of the yarn inthe preceding layer.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. v

SIMON. WV. VARDVVELL.

Witnesses CHAS. A. EDDY, ARTHUR I. HARVEY.

